Internal-combustion engine.



G. THUMMEL. INTERNAL COMBUSTION ENGINE.

APPLICATION I ILED APR 10 1911.

Patented May 20, 1913.

2 SHEETS-SHEET 1 ON MN WITNESSES: IIWENTOR W illiam G. Thummel W. G. THUMMEL.

\ .INTERNAL COMBUSTION ENGINE.

APPLIOATIONIiLED APR. 10, 1911.

1,062,308,, Patented May 20, 1913.

1 1 I 2 SHEETS-SHEET 2.

IVEY

lfV/TA/ESSES. I Liv 11.101,

. UNITED STATES PATENT OFFICE.

WILLIAM G. THUMMEL, OF ST. LOUIS, MISSOURI.

INTERNAL-COMBUSTION ENGINE. I

Specification of Letters Patent.

. Application filed Apr'il'lO. 1911. Serial No. 619,973.

T 0 (all wkomz't may concern: I

Be it known that I, WVILLIAM THUM- MEL, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Internal- Combustion Engine, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it apper-- tainsto make and use the same, reference being had to the accompanying drawings,

forming part of this specification.

One object of my invention is to so construct an internal combustion engine that the heat ordinarily lost in cooling the cylinder sufliciently to allow it to be lubricated can be utilized to increase the power of the engine. With this end in view I provide the engine with one or more turbine fly wheels to which-compressed air is' admitted after being expanded by the heat' of the cylinder or cylinders.

Another object of my invention is to utilize the exhaust products of combustion to increase the power of the engine and this I- accomplish by leading said products of combustion to the turbine fly wheels above referred to.

In the accompanying drawings which illustrate one form of engine made in accordance with my invention, Figure 1 is a vertical section on the line 1-1 of Fig. 3;

' Fig. 2 isfa side "view partly in section and partly in elevation; Fig. 3 is an enlarged cross section taken at right angles to Fig.

1 and Fig. 1 is an enlarged detailed view showing the valve operating mechanism.

Like marks of reference refer to similar parts in the several views in'the' drawings.

10 represents the casingof the machine. Formed in the casing 10 are a pair of cylinders 11 containing pistons 12. Each of the pistons 12 is connectedby means of a pitman rod 13 with a crank arm 14 on the. crank shaft, 15 which passes through the lower part of the casing .10 and is supportedin boxes 16'carried by standards 17. Arranged in the casing above the cylinders '11 are cylinders 20 which are adapted to.

form an air compressor- In each of the cylinders 20 is a piston 21 connected by means of a piston rod 22 with the piston 12 in the corresponding cylinder 11.. The cylinders 20 are surrounded with a water jacket 23 for cooling the same. The cylinders 20 are provided with the usual inlet through the part 27 passes through the passage 29 into the part 28 and from thence is delivered by means of a discharge pipe 30, Fig. 2, to a turbine fly Wheel which will now be described.

Mounted upon the crank shaft 15 are a pair of fly wheels 31 which are inclosed in the casing 10 and provided upon their pe-' riphery with buckets 32 so as to form a turbine. These buckets 32 cooperate with buck- Patented May 20, 1 91 3.

ets '38 formed in the casing 10 and from which the exhaust air and products of combustion escape through the discharge pipe 34. Each of ,the cylinders 11 is provided with a supply valve 36 and a discharge valve.

37, best shown in Fig. 3. These valves 36 and 37 are operated from cam wheels 38 which are mounted upon the casing 10 and driven by means of spur wheels 39 mounted on the shaft 15 as shown in Fig. 3, operated from .the cam wheel 38 by a pair of reciprocating rods 40 and 41, shown in detail in Fig. 4. The rod 40 is secured at its upper end to a bell crank lever 42 pivoted on a bracket 43 and attached to the stem of the inlet valve. 36: The valve 36 is normally held against movement by means of a coil spring-44 surrounding the said rod and bearing at one end against thebracket 43 and at the other against an adjustable nut 45, as

'shownin Fig. 4. Fuel from any suitable .source is supplied to the valve 36 by means of a pipe 46. The rod 11 passes through one arm ofa bell crank lever 47 which is pivoted to a bracket 48 and the other, arm of which is attached to the discharge valve 37.

Bearing upon the arm of the bell crank lever 47 is an adjustable nut 49 and between the said arm and the bracket- 48 is placed a coil spring 50. It will be evident, there-- fore, that while the rod 4:1will positively operate to open the valve 37 thesaid valve may. beopened from pressure within the cylinder 11 without moving the rod 41. The Y I valve 37 therefore not only operates as a positively actuated valve but also operates automatically to remove pressure within the cylinder 11 when it exceeds a predetermined amount the said amount being determined by the tensionof the coil spring 50.- The products of combustion from the cylinder 11 whether discharged after expansion by the positive operation of the valve 37 or before expansion by the automatic operation of said valve, pass through a pipe- 51 leading tothe turbine fly wheel 31 as best. shown inFig. 2, The operation of my e ine will be evi-- 15 dent from the above description. The fuel is led through the pipe 46 to the cylinders 11 'so that whenit is exploded it willactuate the engine in the same manner as any ordinary internal combustionengine, and thus drive the crank shaft 15. At the same time the air' compressors 20 will furnish compressed air which cools the cylinders of the engine and at the, same time the air is expanded and delivered to the turbine fly wheel'sz31 'so that the heat absorbed from the cylinders in place of being wasted is utilizedto assist in driving the shaft 15. In manner-the products of combustion are e led through the pipe 51 to the turbine fly 3 wjiheels 31 so-as to assist in driving the engme. 1

It will be understood that the products of combustion in the combustion chambers 11 W-lll not be completely, expanded at the end of the stroke of the piston 12 but: will contain considerable energy which is usually wasted by being discharged into" the atmosvphere or'-int o*a muflier to reduce the noise e. In my construccaused by such dischar 9 tion the use of the mu er is not only obviatedbut the excess energy from the products the formerito a predetermined amount at of combustion whichls usually wasted is utilized for useful work by the discharge of the products of combustion against the turbine fly wheel.

Having fully described my invention, what I'claim as new and desire to secure by Letters Patent of the United States is:

1. The combination with the cylinder of an internal. combustion engine, of an air compressor arranged in tandem therewith, said cylinder and air compressor having a common head, whereby the heat from thehead of said cylinder is dissipated by said air compressor, an airjacket surrounding said cylinder and receiving the air from said compressor, and an auxiliary motor receiving the air from said jacket.

2. The combination with the cylinder of an internal combustion engine, of an auxiliary fluid pressure motor, a valve opening automatically to connect said cylinder and auxiliary motor to reduce the pressure inthe beginning of the power stroke, and mechanically operated means for opening said valve to.,exhaust said cylinder into said auxiliary motor at the end of the power stroke.

3. In an internal combustion engine, the combination with a casing having cylinders in its upper part and bifurcated at its lower part, of a pair of turbines housed in the bi-' furcations and mounted upon the crankshaft of the engine, and means for delivering the products of combustion from said cylinders to said turbines. y

In testimony whereof, I have hereunto set v my hand and affixed my seal in the presence of the two subscribing witneses.

' WM, G. THUMMEL. [L.S.] Witnesses:

W. A. ALEXANDER, ELIZABETH BAILEY. 

